摘要

Because of the high affinity (K-B greater than or equal to 10(6) L mol(-1)) between Ru(phen)(2)(dppz)(2+) and DNA, the adding of DNA in the solution of Ru(phen)(2)(dppz)(2+)-SDS makes the dissociation of Ru(phen)(2)(dppz)(2+)-SDS, and results in decrease of the resonance light scattering (RLS) signals and increase of the absorbance. Based on this, a novel method is proposed for DNA assay.